Conditions of Service

Toronto Hydro's Conditions of Service and six reference documents are changing. The proposed implementation date is January 1, 2027. We've outlined the proposed changes in the following documents.

Proposed Conditions of Service updates (effective January 1, 2027)

Proposed main document

• Proposed Conditions of Service (PDF, 2.3 MB)
• Summary of Proposed Revisions (PDF, 54 KB)

Proposed reference documents

• Reference 3. Distributed Energy Resource Requirements (PDF, 1.3 MB)
• Reference 4. Requirements for the Design and Construction of Customer-Owned High Voltage Substations (PDF, 2.6 MB)
• Reference 5a. Requirements for the Design and Construction of Customer-Owned Structures (PDF, 444 KB)
• Reference 5b. Construction Standards referenced in Requirements for the Design and Construction of Customer-Owned Structures (PDF, 36.1 MB)
• Reference 6. Metering Requirements 750 Volts or Less (PDF, 1.8 MB)
• Reference 9. Electric Vehicle Charging Connection Requirements for Toronto Hydro Customers (PDF, 178 KB)

The proposed main document and proposed reference documents are currently in draft form. Customers can review the proposed changes and submit comments until December 11, 2026. Customers can submit comments using the contact information at the bottom of this page.

View or download our current Conditions of Service

Main document

Conditions of Service - Main Document (PDF, 1.7 MB)

Revision summary

The Conditions of Service - Revision #25 Summary (PDF, 101 KB) highlights revisions to our Conditions of Service that took effect on January 1, 2026.

Reference documents

The Conditions of Service reference documents provide further background information:

• Reference 1. Economic Evaluation Model for Distribution System Expansion (PDF, 264 KB)
• Reference 2. Standard Connection Agreements - Terms of Conditions (PDF, 70 KB)
• Reference 3. Distributed Energy Resource Requirements (PDF, 1.4 MB)
• Reference 4. Requirements for the Design and Construction of Customer-Owned High Voltage Substations (PDF, 3.2 MB)
• Reference 5a. Requirements for the Design and Construction of Customer-Owned Structures (PDF, 301 KB)
• Reference 5b. Construction Standards referenced in Requirements for the Design and Construction of Customer-Owned Structures (PDF, 34.9 MB)
• Reference 6. Metering Requirements 750 Volts or Less (PDF, 1.7 MB)
• Reference 7. Metering Requirements for 13.8kV and 27.6kV Customer-Owned Substations (PDF, 1,000 KB)
• Reference 8. Metering Services and Charges (PDF, 447 KB)
• Reference 9. Electric Vehicle Charging Connection Requirements for Toronto Hydro Customers (PDF, 147 KB)

Note: Our Conditions of Service are subject to change. They are regulated by the Ontario Energy Board (OEB), and Toronto Hydro will submit any changes to the OEB.

Questions or comments?

Feedback regarding proposed updates to our Conditions of Service can be emailed to conditionsofservice@torontohydro.com or mailed to: